Exmark Z-Plug Operator's Manual page 26

Troubleshooting
The DC Shunt MUST be installed on the NEGATIVE (-) terminal of the battery, (Figure 11) to avoid
blowing the fuse in the meter when testing the output of the 16 amp system. All connections must be clean
and tight for correct readings.
1. Connect stator wire harness to regulator-rectifier.
2. Install DC Shunt (4) on NEGATIVE battery terminal.
3. Insert RED test lead into VΩ receptacle in meter and connect to RED post terminal on shunt (5), Figure 11.
4. Insert BLACK test lead in COM receptacle in meter. Connect to BLACK post terminal on shunt (3).
5. Rotate selector to 300 mV position.
6. With the engine running at 3600 RPM, the output should be 3-20 Amps.
Note: Depending on battery voltage and/or current draw on system
If NO or LOW output is found, be sure that regulator-rectifier is grounded properly and all equipment
connections are clean and secure. If there is still NO or LOW output, replace the regulator-rectifier.
Figure 11
26
g268088